“…In many cases described in the literature and in our experience, the revision of implants with hypoallergenic arthroplasties has led to satisfactory results and a resolution of painful symptoms (Fig. 3 ) [ 14 ]. Fig.…”
Despite the recent advances in surgical techniques, the percentage of painful shoulder arthroplasties is still high (more than 10%). The causes of residual pain after shoulder arthroplasty, and the resulting treatment solutions, are many and different. The most common complications of shoulder prosthesis are infections, aseptic loosening, modular components disassembling, metal hypersensitivity, and instability. There are also implant-related complications such as glenoid wear in hemiarthroplasty, rotator cuff tear in anatomical total shoulder arthroplasty, scapular notching, and acromion fracture in reverse shoulder arthroplasty. Several of these complications can be avoided with a careful selection of the implants, a proper surgical technique and a precise implant positioning. The execution of a more accurate preoperative planning and the possible use of patient-specific implants are expected to translate into better clinical results in the future. We provide the reader with recent evidence on the causes and therapeutic options of this condition.
“…In many cases described in the literature and in our experience, the revision of implants with hypoallergenic arthroplasties has led to satisfactory results and a resolution of painful symptoms (Fig. 3 ) [ 14 ]. Fig.…”
Despite the recent advances in surgical techniques, the percentage of painful shoulder arthroplasties is still high (more than 10%). The causes of residual pain after shoulder arthroplasty, and the resulting treatment solutions, are many and different. The most common complications of shoulder prosthesis are infections, aseptic loosening, modular components disassembling, metal hypersensitivity, and instability. There are also implant-related complications such as glenoid wear in hemiarthroplasty, rotator cuff tear in anatomical total shoulder arthroplasty, scapular notching, and acromion fracture in reverse shoulder arthroplasty. Several of these complications can be avoided with a careful selection of the implants, a proper surgical technique and a precise implant positioning. The execution of a more accurate preoperative planning and the possible use of patient-specific implants are expected to translate into better clinical results in the future. We provide the reader with recent evidence on the causes and therapeutic options of this condition.
“…Although there are multiple studies for total hip and knee replacements, unfortunately there is no definitive research that reports a link between metal allergy and morbidity following shoulder arthroplasty [4]. …”
Section: The Association Between Orthopedic Implants and Metal Hypersmentioning
confidence: 99%
“…Orthopedic implants are composed of nickel, cobalt, chromium, molybdenum, zirconium and/or titanium alloys, while stainless steel is used in fixed orthopedic devices such as screws/plates [4, 5, 30]. As a cause of complication after joint replacement, metal allergy was first reported in 1966, with slowly increasing awareness and reported incidence [6–10].…”
Total hip and knee replacement surgery using metal alloy devices is common. Type IV allergic reactions to these implants occur, though infrequently. While uncommon, peri-implant metal allergic reactions may cause significant morbidity for the affected individual—including aseptic loosening, pseudotumor formation and frank device failure. It is challenging to predict who will have these reactions, even in those with established pre-implant metal allergy. At this time, the scientific literature clearly supports few conclusions. Despite this, we believe several conclusions can be made: routine pre-implant testing in asymptomatic individuals is not indicated; listen to patient’s concerns about metal allergy if the concern arises; patch testing is probably the best pre- and post-implant screening test; post-implantation testing is controversial and even positive LTT or patch test does not definitively diagnose morbidity from a metal allergy; and complete recovery following revision placement of an immunologically inert device is diagnostic. More research is needed to scientifically approach this issue.
“…Orthopedic implants often contain nickel, cobalt, chromium, and/or titanium [31]. Stainless steel, which contains a large percentage of nickel, is often used for screws while cobalt-chromium alloy, which has approximately 1% nickel content, is often used in total joint arthroplasty [9,32].…”
Section: Orthopedic Implantsmentioning
confidence: 99%
“…Although numerous studies on THAs and TKAs have been performed, there are no prospective or retrospective studies that examine the link between metal hypersensitivity and aseptic loosening of total shoulder arthroplasty [31].…”
The use of metals in the medical field has become increasingly prevalent over the past few decades. Patients find themselves being exposed to metals in a variety of ways, ranging from external exposure to instruments such as the stainless steel in surgical blades to internal exposure via medical devices being implanted in their bodies. There has been growing interest in the possibility of developing hypersensitivity reactions to constituent metals in medical implant devices, both in cutaneous and systemic forms. Hypersensitivity reactions to metals are uncommon, but they are reported and require appropriate evaluation and management, particularly if they are symptomatic. In view of the lack of consensus in the field on the appropriate steps to evaluate and manage patients with suspected metal hypersensitivity reactions, this review aims to analyze current evidence on hypersensitivity reactions to metallic implants in orthopedic surgery, endovascular surgery, obstetrics and gynecology, and dental surgery. Key words: Metal hypersensitivity. Metallic implants.
ResumenEl empleo de metales dentro de la medicina ha ido aumentando de forma progresiva en las últimas décadas. Los pacientes se exponen a metales de diferentes formas desde fuentes externas, como instrumental quirúrgico como el presente en las hojas de acero de los bisturíes, hasta implantes metálicos. Como consecuencia de ello se está produciendo un interés creciente por la posibilidad de desarrollar reacciones de hipersensibilidad a metales presentes en los materiales y objetos implantados, tanto en forma de reacciones cutáneas como sistémicas. Las reacciones de hipersensibilidad a metales no son frecuentes, pero pueden desarrollarse, y por ello, requieren de un diagnóstico y tratamiento adecuado, especialmente en aquellos pacientes que desarrollen síntomas. No existe un consenso en el proceso diagnóstico ni en el tratamiento de estas reacciones en los pacientes con sospecha de alergia a metales. Esta revisión tiene por objeto actualizar la evidencia existente sobre las reacciones de hipersensibilidad a implantes metálicos en cirugía ortopédica, cirugía endovascular, cirugía obstétrica y ginecológica (OB-GYN) así como la dental. Palabras clave: Hipersensibilidad a metales. Implantes metálicos.
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